INDEX TO YOLUME XYL* 



Academy of Sciences, National, Chi- 

 cago meeting, 475. 



Alden, W. C, Elkland-Tioga folio, 

 Penna., 894. 



Arc spectra, effect of pressure on, 

 Petavel and Button, 471. 



Ascutney Mt., Vermont, geology, 

 Daly, 267. 



Association, American, meeting at 

 St. Louis, 475. 



B 



Barker, G. F., radioactivity of tho- 

 rium minerals, 161. 



Barus, C, constants of coronas, 325. 



Baskerville, C, spodumene from 

 California, 335 ; action of ultra- 

 violet light upon rare earth oxides, 

 465. 



Beecher, C. E., the genus Romin- 

 geria, 1. 



Blake, J. C, some isomorphous triple 

 thiocyanates, 12 ; colors of allo- 

 tropic silver, 282 ; colloidal gold, 

 381 ; Bredig's silver hydrosols, 431 ; 

 red colloidal gold solutions, 433. 



Boltwood, B. B., chemical analysis 

 by electrolysis, 100. 



BOTANY. 



Cyperaceas, studies in, XIX, Holm, 



17 ; XX, 445. 

 Garden in Cuba, experimental, At- 

 kins, 105. 

 Triadenum virginicum (L.) Rafin. 

 Holm, 369. 

 Branner, J. C, geology of the Ha- 

 waiian Islands, 301 ; peak of Fer- 

 nando de Noronha, 442. 

 Bredig's silver hydrosols, Blake, 431. 

 British Museum, Catalogue of bird's 

 eggs. Gates and Reid, 400. 



Bumstead, H. A., obituary notice of 



J. W. Gibbs, 187 ; radio-active gas 



in surface water, 328. 

 Bush, L. P., dates of publication of 



certain genera of fossil vertebrates, 



96. 



California, river terraces of Klamath 



region, Hershey, 240. 

 Canada geological survey, 395. 

 Cathode light, spectra, Deslandres, 



391. 



— radiations, investigated by phos- 

 phorescence, Lenard, 391. 



— space, dark, Schmidt, 391. 

 Chemical Analysis by Electrolysis, 



Classen and Boltwood, 100. 

 Chemisches Praktikum, Wolfrum, 



101. 

 Chemistry, Analytical, Classen, 390. 



— Physical, Van't Hoff, 390. 



CHEMISTRY. 



Argon in the atmosphere, Moissan, 

 468. 



Arsenic, new method for determina- 

 tion, Gautier, 467. 



Caesium, iodides, Foote, 100. 



Calcium cyanamide, use of, Erl- 

 wein, 388. 



Chlorides, bromides, etc., new 

 method for detecting, Benedict 

 and Snell,- 469. 



Chlorine smelting with electrolysis, 

 Swinburne, 330. 



Gases, Mazza separator for, 330. 



— separation by centrifugal force, 

 Claude and Demoussy, 389. 



Gold, iodometric determination, 

 Maxson, 155. 



— colloidal, Blake, 381. 



solutions, Blake, 433. 



Hydrogen, heat of combustion of, 



Mixter, 214. 



* This Index contains the general heads, Botany, Chemistry {incl. chem. physics), Geology, 

 Minerals, Obituary, Rocks, Zoology, and under each the titles of Articles referring thereto are 

 mentioned. 



